2BQ0

14-3-3 Protein Beta (Human)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.217 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural Basis for Protein-Protein Interactions in the 14-3-3 Protein Family.

Yang, X.Lee, W.H.Sobott, F.Papagrigoriou, E.Robinson, C.V.Grossmann, J.G.Sundstrom, M.Doyle, D.A.Elkins, J.M.

(2006) Proc Natl Acad Sci U S A 103: 17237

  • DOI: https://doi.org/10.1073/pnas.0605779103
  • Primary Citation of Related Structures:  
    2BQ0, 2BR9, 2BTP, 2C23, 2C63, 2C74

  • PubMed Abstract: 

    The seven members of the human 14-3-3 protein family regulate a diverse range of cell signaling pathways by formation of protein-protein complexes with signaling proteins that contain phosphorylated Ser/Thr residues within specific sequence motifs. Previously, crystal structures of three 14-3-3 isoforms (zeta, sigma, and tau) have been reported, with structural data for two isoforms deposited in the Protein Data Bank (zeta and sigma). In this study, we provide structural detail for five 14-3-3 isoforms bound to ligands, providing structural coverage for all isoforms of a human protein family. A comparative structural analysis of the seven 14-3-3 proteins revealed specificity determinants for binding of phosphopeptides in a specific orientation, target domain interaction surfaces and flexible adaptation of 14-3-3 proteins through domain movements. Specifically, the structures of the beta isoform in its apo and peptide bound forms showed that its binding site can exhibit structural flexibility to facilitate binding of its protein and peptide partners. In addition, the complex of 14-3-3 beta with the exoenzyme S peptide displayed a secondary structural element in the 14-3-3 peptide binding groove. These results show that the 14-3-3 proteins are adaptable structures in which internal flexibility is likely to facilitate recognition and binding of their interaction partners.


  • Organizational Affiliation

    Structural Genomics Consortium, University of Oxford, Botnar Research Centre, Oxford OX3 7LD, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
14-3-3 BETA/ALPHA
A, B
245Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P31946 (Homo sapiens)
Explore P31946 
Go to UniProtKB:  P31946
PHAROS:  P31946
GTEx:  ENSG00000166913 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP31946
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.217 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.605α = 90
b = 123.79β = 114.98
c = 54.755γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-05-06
    Type: Initial release
  • Version 1.1: 2013-11-20
    Changes: Derived calculations, Non-polymer description, Other, Structure summary, Version format compliance
  • Version 1.2: 2018-04-04
    Changes: Data collection
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description